CN112229529A - Cable joint temperature measuring device - Google Patents
Cable joint temperature measuring device Download PDFInfo
- Publication number
- CN112229529A CN112229529A CN202010845096.7A CN202010845096A CN112229529A CN 112229529 A CN112229529 A CN 112229529A CN 202010845096 A CN202010845096 A CN 202010845096A CN 112229529 A CN112229529 A CN 112229529A
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- China
- Prior art keywords
- cable
- hole
- measuring device
- joint
- temperature measuring
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 239000004020 conductor Substances 0.000 claims abstract description 26
- 229920006351 engineering plastic Polymers 0.000 claims abstract description 7
- 239000010410 layer Substances 0.000 claims description 19
- 238000007789 sealing Methods 0.000 claims description 17
- 238000001514 detection method Methods 0.000 claims description 9
- 239000011241 protective layer Substances 0.000 claims description 6
- 238000013461 design Methods 0.000 abstract description 6
- 210000001503 joint Anatomy 0.000 description 5
- 238000009529 body temperature measurement Methods 0.000 description 4
- 210000004907 gland Anatomy 0.000 description 4
- 238000012544 monitoring process Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 230000001939 inductive effect Effects 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 230000002159 abnormal effect Effects 0.000 description 1
- 230000006978 adaptation Effects 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000005684 electric field Effects 0.000 description 1
- 230000005672 electromagnetic field Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
Images
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01K—MEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
- G01K1/00—Details of thermometers not specially adapted for particular types of thermometer
- G01K1/14—Supports; Fastening devices; Arrangements for mounting thermometers in particular locations
Abstract
The invention discloses a cable joint temperature measuring device, which comprises a cable intermediate joint, wherein a cable end connecting hole is arranged in the cable intermediate joint, a conductor connecting pipe is arranged in the cable end connecting hole, a fixed insulating layer and a movable insulating layer are arranged in the cable end connecting hole, a flexible film temperature sensor is arranged between the inner surface of the fixed insulating layer and the outer surface of the conductor connecting pipe, and an engineering plastic positioning plate is fixedly arranged on the outer surface of the movable insulating layer; the outer surface of the cable intermediate joint is fixedly provided with a rubber waterproof layer, the cable intermediate joint is provided with a plurality of first threaded through holes communicated with the cable end connecting holes, the rubber waterproof layer is aligned to each first threaded through hole and provided with a second threaded through hole, and each second threaded through hole is internally connected with a positioning screw in a threaded manner. Above-mentioned technical scheme, structural design is reasonable, convenient to use, can all have good adaptability and practicality to the cable joint of various models.
Description
Technical Field
The invention relates to the technical field of cable joint temperature measurement, in particular to a cable joint temperature measuring device.
Background
Along with the continuous promotion of electrical equipment voltage level and the continuous increase of operating current, the equipment phenomenon of generating heat is showing more and more, when power equipment breaks down, often along with the change of temperature, so through the temperature monitoring to power equipment, especially its key position, can in time know power equipment's operating condition. When the temperature is abnormal, early warning can be timely given and the maintenance can be carried out, so that larger faults can be prevented.
For temperature monitoring of the cable intermediate head, it is required to be able to directly monitor the temperature of the core conductor. To meet this requirement, the following difficulties are mainly encountered: the internal space of the cable intermediate joint is extremely narrow, which has high requirements on the size of the sensor; the interior of the cable intermediate joint is in a strong electromagnetic field environment, and the sensor is required to be capable of stably operating under the working condition; devices placed in the middle joint of the cable cannot influence the electric field distribution in the middle joint, otherwise, the failure of the original structural design of the cable joint can be caused, and potential safety hazards are caused; the service life of the cable joint is generally 30 years, so the service life of the built-in temperature measuring device cannot be less than 30 years.
PCT patent CN105190268A, a system for monitoring the temperature of an electrical conductor enclosed in at least a (semi-) conductive layer. The system comprises: a wireless passive sensing unit, a transceiver unit and a control unit. The wireless passive sensing unit includes at least one temperature sensing part and is configured to have a resonance frequency and/or a Q value that varies with a temperature of the conductive body. The transceiver unit is configured to electromagnetically couple to the wireless passive inductive unit and emit a signal indicative of a resonant frequency and/or a Q value of the wireless passive inductive unit. The transceiver unit is further configured to communicate with a control unit that ascertains a signal indicative of one or both of the resonant frequency and the Q value, and determines a temperature value for the electrical conductor based on the ascertained signal indicative of one or both of the resonant frequency and the Q value. The sensor described in this patent is located between the connecting copper tube and the insulating layer, and the outer diameter size needs to be completely matched with the size of the cable insulating layer to meet the electrical performance requirement. This just causes this technical scheme can only be applicable to specific size's such as 110kV that the inner space is great cable intermediate head, when the cable joint of different models and producer of needs adaptation, then need carry out special design, has increased the popularization and application degree of difficulty of product.
Disclosure of Invention
Aiming at the defects in the prior art, the invention aims to provide the cable joint temperature measuring device which is reasonable in structural design, convenient to use, capable of having good adaptability to various types of cable joints and good in practicability.
In order to achieve the purpose, the invention provides the following technical scheme: a cable joint temperature measuring device comprises a cable intermediate joint, wherein a cable end connecting hole is formed in the cable intermediate joint, a conductor connecting pipe is arranged in the cable end connecting hole, a fixed insulating layer and a movable insulating layer are arranged in the cable end connecting hole, a flexible film temperature sensor is arranged between the inner surface of the fixed insulating layer and the outer surface of the conductor connecting pipe, and an engineering plastic positioning plate is fixedly arranged on the outer surface of the movable insulating layer; the fixed waterproof skin of rubber that is provided with on cable intermediate head's the surface, the last first screw thread through-hole that is provided with a plurality of and cable end connecting hole intercommunication of cable intermediate head, the waterproof skin of rubber is aimed at every first screw thread through-hole position and all is provided with a second screw thread through-hole, and equal threaded connection has a positioning screw in every second screw thread through-hole, and every positioning screw head compresses tightly the surface of engineering plastics locating plate after passing the second screw thread through-hole of alignment and the first screw thread through-hole of alignment in proper order.
The invention is further configured to: the left end of the conductor connecting pipe is provided with a first cable, a first cable sealing end cover is sleeved on the first cable, and the right end face of the first cable sealing end cover is fixedly bonded with the left end face of the cable intermediate joint.
The invention is further configured to: the right end of the conductor connecting pipe is provided with a second cable, a second cable sealing end cover is sleeved on the second cable, and the right end face of the second cable sealing end cover is fixedly bonded with the right end face of the cable intermediate joint.
The invention is further configured to: and each positioning screw rod is sleeved with an O-shaped sealing ring, and each positioning screw rod forms sealing with the inner wall surface of the aligned second threaded through hole or the inner wall surface of the aligned first threaded through hole through the O-shaped sealing ring.
The invention is further configured to: the head of each positioning screw is fixedly bonded with a rubber insulating block.
The invention is further configured to: the outer surface of the cable intermediate joint is fixedly provided with a signal receiving and transmitting unit, one end of the signal receiving and transmitting unit is provided with a controller, the controller controls the signal receiving and transmitting unit to send detection signals, the flexible film temperature sensor sends feedback signals according to the detection signals, the signal receiving and transmitting unit receives the feedback signals and transmits the signals to the controller, and the controller obtains the temperature of the cable intermediate joint according to the feedback signals transmitted by the signal receiving and transmitting unit.
The invention is further configured to: the controller is electrically connected with the signal receiving and transmitting unit through a lead, and batteries are arranged in the controller and the signal receiving and transmitting unit.
The invention is further configured to: the signal receiving and transmitting unit comprises a collector and a reader, the reader is electrically connected with the collector and used for sending detection signals and receiving feedback signals, and the collector is used for transmitting the feedback signals received by the reader to the controller.
The invention is further configured to: the flexible film temperature sensor is a wireless passive flexible film temperature sensor and comprises a sensor body and a protective layer, and the protective layer is coated outside the sensor body.
The invention is further configured to: the flexible film temperature sensor is of a sheet structure or a cylindrical structure.
The invention has the advantages that: compared with the prior art, the structure of the invention is more reasonable, the flexible film temperature sensor is arranged between the inner wall surface of the fixed insulating layer and the outer surface of the conductor connecting pipe, on one hand, the structure of the flexible film temperature sensor does not need to be changed according to the size of the inner space of the conductor connecting pipe, the flexible film temperature sensor can be fixed only by being arranged outside the conductor connecting pipe, and the conductor connecting pipe is fastened by the positioning screw rod, so that the flexible film temperature sensor has better adaptability to cable connectors of different models of different manufacturers; on the other hand, the flexible film temperature sensor can be closer to the conductor connecting pipe, so that heat conduction is facilitated, and temperature measurement is more accurate; the cable joint has the advantages of reasonable structural design, convenience in use, good adaptability to various types of cable joints and good practicability.
The invention is further described with reference to the drawings and the specific embodiments in the following description.
Drawings
FIG. 1 is a schematic structural diagram of an embodiment of the present invention;
FIG. 2 is an enlarged view of section I of FIG. 1;
fig. 3 is a block diagram of a cable intermediate joint temperature measurement system according to an embodiment of the present invention.
Detailed Description
In the description of the present embodiment, it should be noted that, as the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", "front", "rear", etc. appear, their indicated orientations or positional relationships are based on those shown in the drawings, and are only for convenience of describing the present invention and simplifying the description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" as appearing herein are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
Referring to fig. 1, 2 and 3, the temperature measuring device for the cable joint disclosed by the invention comprises a cable intermediate joint 1, wherein a cable end connecting hole 11 is arranged in the cable intermediate joint 1, a conductor connecting pipe 2 is arranged in the cable end connecting hole 11, a fixed insulating layer 12 and a movable insulating layer 13 are arranged in the cable end connecting hole 11, a flexible film temperature sensor 3 is arranged between the inner surface of the fixed insulating layer 12 and the outer surface of the conductor connecting pipe 2, and an engineering plastic positioning plate 4 is fixedly arranged on the outer surface of the movable insulating layer 13; the fixed waterproof outer 5 of rubber that is provided with on the surface of cable intermediate head 1, be provided with the first screw through-hole 14 of a plurality of and cable end connecting hole 11 intercommunication on the cable intermediate head 1, the waterproof outer 5 of rubber is aimed at every first screw through-hole position and all is provided with a second screw through-hole 51, and equal threaded connection has a positioning screw 6 in every second screw through-hole 51, and every positioning screw 6 head compresses tightly the surface of engineering plastics locating plate 4 after passing second screw through-hole 51 of alignment and the first screw through-hole 14 of alignment in proper order.
Preferably, the number of the first threaded through hole 14, the second threaded through hole 51 and the positioning screw 6 is 2.
In order to make the structure of the invention more reasonable, preferably, the left end of the conductor connecting pipe 2 is provided with a first cable 7, a first cable sealing end cover 8 is sleeved on the first cable 7, and the right end face of the first cable sealing end cover 8 is fixedly bonded with the left end face of the cable intermediate joint 1.
Preferably, the joint of the right end face of the first cable gland 8 and the left end face of the cable intermediate joint 1 forms a seal, and the joint of the first cable gland 8 and the outer surface of the first cable 7 forms a seal.
The right end of the conductor connecting pipe 2 is provided with a second cable 9, a second cable sealing end cover 10 is sleeved on the second cable 9, and the right end face of the second cable sealing end cover 10 is fixedly bonded with the right end face of the cable intermediate joint 1.
Preferably, the joint of the right end face of the second cable gland 10 and the right end face of the cable intermediate joint 1 forms a seal, and the joint of the second cable gland 10 and the outer surface of the second cable 9 forms a seal.
Preferably, each positioning screw 6 is sleeved with an O-ring 16, and each positioning screw 6 forms a seal with the inner wall surface of the aligned second threaded through hole 51 or the inner wall surface of the aligned first threaded through hole 14 through the O-ring 16.
Preferably, a rubber insulating block 15 is fixedly bonded to the head of each positioning screw 6.
A signal transceiving unit 16 is fixedly arranged on the outer surface of the cable intermediate joint 1, a controller 17 is arranged at one end of the signal transceiving unit 16, the controller 17 controls the signal transceiving unit 16 to send a detection signal, the flexible film temperature sensor 3 sends a feedback signal according to the detection signal, the signal transceiving unit 16 receives the feedback signal and transmits the signal to the controller 17, and the controller 17 obtains the temperature of the cable intermediate joint 1 according to the feedback signal transmitted by the signal transceiving unit 16.
The controller 17 and the signal transceiver unit 16 are electrically connected through a wire, and batteries are arranged in the controller 17 and the signal transceiver unit 16.
The signal transceiving unit 16 includes a collector and a reader, the reader is electrically connected to the collector, the reader is used for sending a detection signal and receiving a feedback signal, and the collector is used for transmitting the feedback signal received by the reader to the controller 17.
The flexible film temperature sensor 3 is a wireless passive flexible film temperature sensor, and the flexible film temperature sensor 3 comprises a sensor body and a protective layer, wherein the protective layer is coated outside the sensor body.
The flexible film temperature sensor 3 is of a sheet structure or a cylindrical structure.
In practical application, the flexible film temperature sensor is arranged between the inner wall surface of the fixed insulating layer and the outer surface of the conductor connecting pipe, so that on one hand, the structure of the flexible film temperature sensor does not need to be changed according to the size of the inner space of the conductor connecting pipe, and on the other hand, the flexible film temperature sensor can be fixed only by being arranged outside the conductor connecting pipe; on the other hand, the flexible film temperature sensor can be closer to the conductor connecting pipe, so that heat conduction is facilitated, and temperature measurement is more accurate; the cable joint has the advantages of reasonable structural design, convenience in use, good adaptability to various types of cable joints and good practicability.
The above embodiments are described in detail for the purpose of further illustrating the present invention and should not be construed as limiting the scope of the present invention, and the skilled engineer can make insubstantial modifications and variations of the present invention based on the above disclosure.
Claims (10)
1. The utility model provides a cable joint temperature measuring device, includes cable intermediate head (1), be provided with cable end connecting hole (11) in cable intermediate head (1), be provided with conductor connecting pipe (2), its characterized in that in cable end connecting hole (11): a fixed insulating layer (12) and a movable insulating layer (13) are arranged in the cable end connecting hole (11), a flexible film temperature sensor (3) is arranged between the inner surface of the fixed insulating layer (12) and the outer surface of the conductor connecting pipe (2), and an engineering plastic positioning plate (4) is fixedly arranged on the outer surface of the movable insulating layer (13); the outer fixed rubber waterproof layer (5) that is provided with on the surface of cable intermediate head (1), be provided with first screw thread through-hole (14) of a plurality of and cable end connecting hole (11) intercommunication on cable intermediate head (1), rubber waterproof layer (5) are aimed at every first screw thread through-hole position and all are provided with one second screw thread through-hole (51), and equal threaded connection has a positioning screw (6) in every second screw thread through-hole (51), and every positioning screw (6) head compresses tightly the surface of engineering plastics locating plate (4) after passing second screw thread through-hole (51) of aiming at and first screw thread through-hole (14) of aiming at in proper order.
2. The cable joint temperature measuring device according to claim 1, wherein: the left end of the conductor connecting pipe (2) is provided with a first cable (7), a first cable sealing end cover (8) is sleeved on the first cable (7), and the right end face of the first cable sealing end cover (8) is fixedly bonded with the left end face of the cable intermediate joint (1).
3. The cable joint temperature measuring device according to claim 2, wherein: the right end of the conductor connecting pipe (2) is provided with a second cable (9), a second cable sealing end cover (10) is sleeved on the second cable (9), and the right end face of the second cable sealing end cover (10) is fixedly bonded with the right end face of the cable intermediate joint (1).
4. The cable joint temperature measuring device according to claim 3, wherein: an O-shaped sealing ring (16) is sleeved on each positioning screw (6), and each positioning screw (16) is sealed with the inner wall surface of the aligned second threaded through hole (51) or the inner wall surface of the aligned first threaded through hole (14) through the O-shaped sealing ring (16).
5. The cable joint temperature measuring device of claim 4, wherein: the head of each positioning screw rod (6) is fixedly bonded with a rubber insulating block (15).
6. The cable joint temperature measuring device according to claim 1 or 5, wherein: the outer surface of the cable intermediate joint (1) is fixedly provided with a signal transceiving unit (16), one end of the signal transceiving unit (16) is provided with a controller (17), the controller (17) controls the signal transceiving unit (16) to send a detection signal, the flexible film temperature sensor (3) sends a feedback signal according to the detection signal, the signal transceiving unit (16) receives the feedback signal and transmits the signal to the controller (17), and the controller (17) obtains the temperature of the cable intermediate joint (1) according to the feedback signal transmitted by the signal transceiving unit (16).
7. The cable joint temperature measuring device of claim 6, wherein: the controller (17) and the signal transceiving unit (16) are electrically connected through a lead, and batteries are arranged in the controller (17) and the signal transceiving unit (16).
8. The cable joint temperature measuring device according to claim 7, wherein: the signal receiving and transmitting unit (16) comprises a collector and a reader, the reader is electrically connected with the collector and used for sending detection signals and receiving feedback signals, and the collector is used for transmitting the feedback signals received by the reader to the controller (17).
9. The cable joint temperature measuring device according to claim 8, wherein: the flexible film temperature sensor (3) is a wireless passive flexible film temperature sensor, the flexible film temperature sensor (3) comprises a sensor body and a protective layer, and the protective layer is coated outside the sensor body.
10. The cable joint temperature measuring device according to claim 8, wherein: the flexible film temperature sensor (3) is of a sheet structure or a cylindrical structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010845096.7A CN112229529A (en) | 2020-08-20 | 2020-08-20 | Cable joint temperature measuring device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010845096.7A CN112229529A (en) | 2020-08-20 | 2020-08-20 | Cable joint temperature measuring device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112229529A true CN112229529A (en) | 2021-01-15 |
Family
ID=74116387
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010845096.7A Pending CN112229529A (en) | 2020-08-20 | 2020-08-20 | Cable joint temperature measuring device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112229529A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113932946A (en) * | 2021-10-08 | 2022-01-14 | 江苏依卡维电子科技有限公司 | Overheat state electronic monitoring system of high-voltage cable connector |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203056532U (en) * | 2013-02-24 | 2013-07-10 | 衢州市易凡设计有限公司 | Cable bushing |
| CN206650413U (en) * | 2017-04-11 | 2017-11-17 | 浙江贯洲电气有限公司 | A kind of single hole adapts to more specification cable connectors |
| CN208522091U (en) * | 2018-06-29 | 2019-02-19 | 广州澳通电线电缆有限公司 | Photovoltaic conflux private cable with fast joint |
| CN209029890U (en) * | 2018-12-04 | 2019-06-25 | 浙江雷诺尔电气有限公司 | A kind of locking environment-friendly metal cable connector |
| CN110261001A (en) * | 2019-06-28 | 2019-09-20 | 浙江荷清柔性电子技术有限公司 | Cable intermediate joint temperature measurement system |
| CN209963294U (en) * | 2019-06-03 | 2020-01-17 | 秉岳电气(上海)有限公司 | Insulating sealing joint and connecting structure thereof |
| CN210040581U (en) * | 2019-07-31 | 2020-02-07 | 广州乐蛙儿网络科技有限公司 | Cable connection terminal with fire prevention function |
| CN210167757U (en) * | 2019-07-09 | 2020-03-20 | 天津天安机电设备安装工程有限公司 | Interface sealing structure of metal cable pipe |
-
2020
- 2020-08-20 CN CN202010845096.7A patent/CN112229529A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203056532U (en) * | 2013-02-24 | 2013-07-10 | 衢州市易凡设计有限公司 | Cable bushing |
| CN206650413U (en) * | 2017-04-11 | 2017-11-17 | 浙江贯洲电气有限公司 | A kind of single hole adapts to more specification cable connectors |
| CN208522091U (en) * | 2018-06-29 | 2019-02-19 | 广州澳通电线电缆有限公司 | Photovoltaic conflux private cable with fast joint |
| CN209029890U (en) * | 2018-12-04 | 2019-06-25 | 浙江雷诺尔电气有限公司 | A kind of locking environment-friendly metal cable connector |
| CN209963294U (en) * | 2019-06-03 | 2020-01-17 | 秉岳电气(上海)有限公司 | Insulating sealing joint and connecting structure thereof |
| CN110261001A (en) * | 2019-06-28 | 2019-09-20 | 浙江荷清柔性电子技术有限公司 | Cable intermediate joint temperature measurement system |
| CN210167757U (en) * | 2019-07-09 | 2020-03-20 | 天津天安机电设备安装工程有限公司 | Interface sealing structure of metal cable pipe |
| CN210040581U (en) * | 2019-07-31 | 2020-02-07 | 广州乐蛙儿网络科技有限公司 | Cable connection terminal with fire prevention function |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113932946A (en) * | 2021-10-08 | 2022-01-14 | 江苏依卡维电子科技有限公司 | Overheat state electronic monitoring system of high-voltage cable connector |
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| PB01 | Publication | ||
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| SE01 | Entry into force of request for substantive examination | ||
| CB03 | Change of inventor or designer information | ||
| CB03 | Change of inventor or designer information |
Inventor after: Li Peng Inventor after: Gao Ming Inventor after: Ye Nan Inventor after: Guan Jinsheng Inventor after: Shi Bo Inventor after: Kong Bin Inventor after: Zhang Hongjuan Inventor after: Yang Jinsong Inventor before: Li Peng Inventor before: Gao Ming Inventor before: Ye Nan Inventor before: Guan Jinsheng Inventor before: Shi Bo Inventor before: Kong Bin Inventor before: Zhang Hongjuan Inventor before: Yang Jinsong |
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Application publication date: 20210115 |